Clay-crushing roller



(No'ModeL) J. W. PENFIELDL y OLA-Y GRUS'HING ROLLER. No. 292.576.

Patented Jan. 29,' 1884.

w/nvgssss UNITED STATE PATENT OFFICE.

JAMES w. PENFI'ELD, or IVILLOUGHBY, oI-no.

CLAY-CRUSHING ROLLER.

SPECIFICATION forming part of Letters Patent No. 292,576, dated January29, 1884.

' Application filed December 21,1883. (No model.)

To all w/wm it may concern Be it known that I, JAMES W. PENFIELD, of\Villoughby, in the county of Lake and State of Ohio, have inventedcertain new and useful Improvements in Clay-Crushing Rollers; and I dohereby declare the following to be a full, clear, and exact descriptionof the v invention, such as will enable others skilled in the art towhich it pertains to make and use the same.

My invention relates to improvements in clay-crushing rollers.

The object of the invention is .to provide conical corrugated rollers,with the larger and smaller end respectively contiguous, and that willhave the advantage of corrugations the same as cylindrical rollerspatented by me November 27 1883, Nos. 289,025 and 289,026, but will beespecially adapted to work stony clay, as the inclination of the uppersurface of the rollers will facilitate the discharge of stones from themachine. A further object is to provide a hopper of such constructionthat, while the stones may pass without hinderance from the machine,little or no clay will be wasted.

Vith these ends in view my invention conslsts 1n certain features ofconstruction and in combination of parts hereinafter described,

and pointed out in the claims.

In the accompanying drawings, Figure 1 is a plan view of my improvedrollers, but withthe hopper removed. speotive of the hopper.

A and A are conical rollers, placed pref- Fig. 2 is a view in pererablywith their axes about horizontal, and

provided with the engaging-gears a and a. and the driving-pulley B. Theaxes of the rollers are journaled in the boxes 0, that are adjustable,so that the rollers maybe set the desired distance apart. Therollers-one or both-are provided with circumferential corrugations thatmay be varied according to the kind of clay that is to be pulverized. Ifthe clay is very stony, spiral corrugations, rightrevolve, will be foundeffective in cutting and breaking the clay, while the rollers, by reasonof the inclination of the upper surfaces, will still discharge stonequite freely. A very good result may be had by havingone roller groovedspirally, so that the lead of the spiral is in the direction that willaid in discharging the'stones from the machine, and the other rollerprovided with aseries of circumferential grooves that are not spiral.

Clay-crushing rollers are usually provided with a hopper, forconvenience in feeding the clayinto the rollers. When corrugations orother means are used for discharging stones from the rollers, an openingin one or both ends of the hopper is left for the passage of the stones.Through the same openings lumps of clay will also pass, so that theordinary hop- .per that will admit of the escape of the stones is verywasteful. I have therefore devised an improved hopper that, whileallowing the stone to pass, will'not waste the clay.

The body of the hopper H may be shaped in the usual manner, but providedwith a partition,'H, set back some distance from the ends of the rollerswhere the stones are discharged. At-the lower end of this partition isleft an open space, as shown at h, sufficiently large for the passage ofthe stones. As the said opening is some distance from the end of therollers, these lumps of clay, that pass out of the hopper with thestones, will come in contact with and be crushed by the rollers beforereaching the point of discharge at the end of the rollers, so that bythis simple device there will be no waste of clay. This partition H isusually secured by woodscrews passing through the hopper from theoutside, so that the partition is easily adjustable, and may be securedin any part of the hopper where it is found to be most effective, .ormay be moved from time to time to suit the different kinds of clay.

IVhat I claim is- 1. Conical corrugated clay-crushing rollers,substantially as set forth.

2. Conical clay-crushing rollers, one or more of which are provided witha spiral corrugation extending from end to end of the roller,substantially .as set forth.

3. In clay-erushingrollers, a partition or In testimony whereof I signthis specification, in the presence of two witnesses, this 10th day ofDecember, 1883.

JAMES \V. PENFIELD.

! F. O. CARROLL,

i Witnesses: f H. Y. Ononrucn.

